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the main force responsible for the upwards movement of water in the xylem.
large blind-ending sac forming the first part of the mammalian large intestine, to which the...
(also called vascular tissue) the tissues that transport water and dissolved food in a...
all types of waste that pose a significant threat to people and the environment.
the process whereby a particular change causes a response which reverses that change.
a social structure in which different classes are determined by heredity.